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<a name="1" href="#1">1</a>   <em class="comment">/*</em>
<a name="2" href="#2">2</a>   <em class="comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em>
<a name="3" href="#3">3</a>   <em class="comment"> * contributor license agreements.  See the NOTICE file distributed with</em>
<a name="4" href="#4">4</a>   <em class="comment"> * this work for additional information regarding copyright ownership.</em>
<a name="5" href="#5">5</a>   <em class="comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em>
<a name="6" href="#6">6</a>   <em class="comment"> * (the "License"); you may not use this file except in compliance with</em>
<a name="7" href="#7">7</a>   <em class="comment"> * the License.  You may obtain a copy of the License at</em>
<a name="8" href="#8">8</a>   <em class="comment"> *</em>
<a name="9" href="#9">9</a>   <em class="comment"> *      <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="10" href="#10">10</a>  <em class="comment"> *</em>
<a name="11" href="#11">11</a>  <em class="comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a name="12" href="#12">12</a>  <em class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a name="13" href="#13">13</a>  <em class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a name="14" href="#14">14</a>  <em class="comment"> * See the License for the specific language governing permissions and</em>
<a name="15" href="#15">15</a>  <em class="comment"> * limitations under the License.</em>
<a name="16" href="#16">16</a>  <em class="comment"> */</em>
<a name="17" href="#17">17</a>  <strong>package</strong> org.azeckoski.reflectutils.beanutils;
<a name="18" href="#18">18</a>  
<a name="19" href="#19">19</a>  <em>/**<em>*</em></em>
<a name="20" href="#20">20</a>  <em> * Default Property Name Expression {@link Resolver} Implementation.</em>
<a name="21" href="#21">21</a>  <em> * &lt;p></em>
<a name="22" href="#22">22</a>  <em> * This class assists in resolving property names in the following five formats,</em>
<a name="23" href="#23">23</a>  <em> * with the layout of an identifying String in parentheses:</em>
<a name="24" href="#24">24</a>  <em> * &lt;ul></em>
<a name="25" href="#25">25</a>  <em> * &lt;li>&lt;strong>Simple (&lt;code>name&lt;/code>)&lt;/strong> - The specified</em>
<a name="26" href="#26">26</a>  <em> *     &lt;code>name&lt;/code> identifies an individual property of a particular</em>
<a name="27" href="#27">27</a>  <em> *     JavaBean.  The name of the actual getter or setter method to be used</em>
<a name="28" href="#28">28</a>  <em> *     is determined using standard JavaBeans instrospection, so that (unless</em>
<a name="29" href="#29">29</a>  <em> *     overridden by a &lt;code>BeanInfo&lt;/code> class, a property named "xyz"</em>
<a name="30" href="#30">30</a>  <em> *     will have a getter method named &lt;code>getXyz()&lt;/code> or (for boolean</em>
<a name="31" href="#31">31</a>  <em> *     properties only) &lt;code>isXyz()&lt;/code>, and a setter method named</em>
<a name="32" href="#32">32</a>  <em> *     &lt;code>setXyz()&lt;/code>.&lt;/li></em>
<a name="33" href="#33">33</a>  <em> * &lt;li>&lt;strong>Nested (&lt;code>name1.name2.name3&lt;/code>)&lt;/strong> The first</em>
<a name="34" href="#34">34</a>  <em> *     name element is used to select a property getter, as for simple</em>
<a name="35" href="#35">35</a>  <em> *     references above.  The object returned for this property is then</em>
<a name="36" href="#36">36</a>  <em> *     consulted, using the same approach, for a property getter for a</em>
<a name="37" href="#37">37</a>  <em> *     property named &lt;code>name2&lt;/code>, and so on.  The property value that</em>
<a name="38" href="#38">38</a>  <em> *     is ultimately retrieved or modified is the one identified by the</em>
<a name="39" href="#39">39</a>  <em> *     last name element.&lt;/li></em>
<a name="40" href="#40">40</a>  <em> * &lt;li>&lt;strong>Indexed (&lt;code>name[index]&lt;/code>)&lt;/strong> - The underlying</em>
<a name="41" href="#41">41</a>  <em> *     property value is assumed to be an array, or this JavaBean is assumed</em>
<a name="42" href="#42">42</a>  <em> *     to have indexed property getter and setter methods.  The appropriate</em>
<a name="43" href="#43">43</a>  <em> *     (zero-relative) entry in the array is selected.  &lt;code>List&lt;/code></em>
<a name="44" href="#44">44</a>  <em> *     objects are now also supported for read/write.  You simply need to define</em>
<a name="45" href="#45">45</a>  <em> *     a getter that returns the &lt;code>List&lt;/code>&lt;/li></em>
<a name="46" href="#46">46</a>  <em> * &lt;li>&lt;strong>Mapped (&lt;code>name(key)&lt;/code>)&lt;/strong> - The JavaBean</em>
<a name="47" href="#47">47</a>  <em> *     is assumed to have an property getter and setter methods with an</em>
<a name="48" href="#48">48</a>  <em> *     additional attribute of type &lt;code>java.lang.String&lt;/code>.&lt;/li></em>
<a name="49" href="#49">49</a>  <em> * &lt;li>&lt;strong>Combined (&lt;code>name1.name2[index].name3(key)&lt;/code>)&lt;/strong> -</em>
<a name="50" href="#50">50</a>  <em> *     Combining mapped, nested, and indexed references is also</em>
<a name="51" href="#51">51</a>  <em> *     supported.&lt;/li></em>
<a name="52" href="#52">52</a>  <em> * &lt;/ul></em>
<a name="53" href="#53">53</a>  <em> *</em>
<a name="54" href="#54">54</a>  <em> * @version $Revision: 10 $ $Date: 2008-10-01 10:56:15 +0000 (Wed, 01 Oct 2008) $</em>
<a name="55" href="#55">55</a>  <em> * @since 1.8.0</em>
<a name="56" href="#56">56</a>  <em> */</em>
<a name="57" href="#57">57</a>  <strong>public</strong> <strong>class</strong> <a href="../../../../org/azeckoski/reflectutils/beanutils/DefaultResolver.html">DefaultResolver</a> implements <a href="../../../../org/azeckoski/reflectutils/beanutils/Resolver.html">Resolver</a> {
<a name="58" href="#58">58</a>  
<a name="59" href="#59">59</a>      <strong>private</strong> <strong>static</strong> <strong>final</strong> <strong>char</strong> NESTED        = '.';
<a name="60" href="#60">60</a>      <strong>private</strong> <strong>static</strong> <strong>final</strong> <strong>char</strong> MAPPED_START  = '(';
<a name="61" href="#61">61</a>      <strong>private</strong> <strong>static</strong> <strong>final</strong> <strong>char</strong> MAPPED_END    = ')';
<a name="62" href="#62">62</a>      <strong>private</strong> <strong>static</strong> <strong>final</strong> <strong>char</strong> INDEXED_START = '[';
<a name="63" href="#63">63</a>      <strong>private</strong> <strong>static</strong> <strong>final</strong> <strong>char</strong> INDEXED_END   = ']';
<a name="64" href="#64">64</a>  
<a name="65" href="#65">65</a>      <em>/**<em>*</em></em>
<a name="66" href="#66">66</a>  <em>     * Default Constructor.</em>
<a name="67" href="#67">67</a>  <em>     */</em>
<a name="68" href="#68">68</a>      <strong>public</strong> <a href="../../../../org/azeckoski/reflectutils/beanutils/DefaultResolver.html">DefaultResolver</a>() {
<a name="69" href="#69">69</a>      }
<a name="70" href="#70">70</a>  
<a name="71" href="#71">71</a>      <em>/**<em>*</em></em>
<a name="72" href="#72">72</a>  <em>     * Return the index value from the property expression or -1.</em>
<a name="73" href="#73">73</a>  <em>     *</em>
<a name="74" href="#74">74</a>  <em>     * @param expression The property expression</em>
<a name="75" href="#75">75</a>  <em>     * @return The index value or -1 if the property is not indexed</em>
<a name="76" href="#76">76</a>  <em>     * @throws IllegalArgumentException If the indexed property is illegally</em>
<a name="77" href="#77">77</a>  <em>     * formed or has an invalid (non-numeric) value.</em>
<a name="78" href="#78">78</a>  <em>     */</em>
<a name="79" href="#79">79</a>      <strong>public</strong> <strong>int</strong> getIndex(String expression) {
<a name="80" href="#80">80</a>          <strong>if</strong> (expression == <strong>null</strong> || expression.length() == 0) {
<a name="81" href="#81">81</a>              <strong>return</strong> -1;
<a name="82" href="#82">82</a>          }
<a name="83" href="#83">83</a>          <strong>for</strong> (<strong>int</strong> i = 0; i &lt; expression.length(); i++) {
<a name="84" href="#84">84</a>              <strong>char</strong> c = expression.<strong>char</strong>At(i);
<a name="85" href="#85">85</a>              <strong>if</strong> (c == NESTED || c == MAPPED_START) {
<a name="86" href="#86">86</a>                  <strong>return</strong> -1;
<a name="87" href="#87">87</a>              } <strong>else</strong> <strong>if</strong> (c == INDEXED_START) {
<a name="88" href="#88">88</a>                  <strong>int</strong> end = expression.indexOf(INDEXED_END, i);
<a name="89" href="#89">89</a>                  <strong>if</strong> (end &lt; 0) {
<a name="90" href="#90">90</a>                      <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"Missing End Delimiter"</span>);
<a name="91" href="#91">91</a>                  }
<a name="92" href="#92">92</a>                  String value = expression.substring(i + 1, end);
<a name="93" href="#93">93</a>                  <strong>if</strong> (value.length() == 0) {
<a name="94" href="#94">94</a>                      <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"No Index Value"</span>);
<a name="95" href="#95">95</a>                  }
<a name="96" href="#96">96</a>                  <strong>int</strong> index = 0;
<a name="97" href="#97">97</a>                  <strong>try</strong> {
<a name="98" href="#98">98</a>                      index = Integer.parseInt(value, 10);
<a name="99" href="#99">99</a>                  } <strong>catch</strong> (NumberFormatException e) {
<a name="100" href="#100">100</a>                     <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"Invalid index value '"</span> + value + <span class="string">"'"</span>);
<a name="101" href="#101">101</a>                 }
<a name="102" href="#102">102</a>                 <strong>return</strong> index;
<a name="103" href="#103">103</a>             }
<a name="104" href="#104">104</a>         }
<a name="105" href="#105">105</a>         <strong>return</strong> -1;
<a name="106" href="#106">106</a>     }
<a name="107" href="#107">107</a> 
<a name="108" href="#108">108</a>     <em>/**<em>*</em></em>
<a name="109" href="#109">109</a> <em>     * Return the map key from the property expression or &lt;code>null&lt;/code>.</em>
<a name="110" href="#110">110</a> <em>     *</em>
<a name="111" href="#111">111</a> <em>     * @param expression The property expression</em>
<a name="112" href="#112">112</a> <em>     * @return The index value</em>
<a name="113" href="#113">113</a> <em>     * @throws IllegalArgumentException If the mapped property is illegally formed.</em>
<a name="114" href="#114">114</a> <em>     */</em>
<a name="115" href="#115">115</a>     <strong>public</strong> String getKey(String expression) {
<a name="116" href="#116">116</a>         <strong>if</strong> (expression == <strong>null</strong> || expression.length() == 0) {
<a name="117" href="#117">117</a>             <strong>return</strong> <strong>null</strong>;
<a name="118" href="#118">118</a>         }
<a name="119" href="#119">119</a>         <strong>for</strong> (<strong>int</strong> i = 0; i &lt; expression.length(); i++) {
<a name="120" href="#120">120</a>             <strong>char</strong> c = expression.<strong>char</strong>At(i);
<a name="121" href="#121">121</a>             <strong>if</strong> (c == NESTED || c == INDEXED_START) {
<a name="122" href="#122">122</a>                 <strong>return</strong> <strong>null</strong>;
<a name="123" href="#123">123</a>             } <strong>else</strong> <strong>if</strong> (c == MAPPED_START) {
<a name="124" href="#124">124</a>                 <strong>int</strong> end = expression.indexOf(MAPPED_END, i);
<a name="125" href="#125">125</a>                 <strong>if</strong> (end &lt; 0) {
<a name="126" href="#126">126</a>                     <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"Missing End Delimiter"</span>);
<a name="127" href="#127">127</a>                 }
<a name="128" href="#128">128</a>                 <strong>return</strong> expression.substring(i + 1, end);
<a name="129" href="#129">129</a>             }
<a name="130" href="#130">130</a>         }
<a name="131" href="#131">131</a>         <strong>return</strong> <strong>null</strong>;
<a name="132" href="#132">132</a>     }
<a name="133" href="#133">133</a> 
<a name="134" href="#134">134</a>     <em>/**<em>*</em></em>
<a name="135" href="#135">135</a> <em>     * Return the property name from the property expression.</em>
<a name="136" href="#136">136</a> <em>     *</em>
<a name="137" href="#137">137</a> <em>     * @param expression The property expression</em>
<a name="138" href="#138">138</a> <em>     * @return The property name</em>
<a name="139" href="#139">139</a> <em>     */</em>
<a name="140" href="#140">140</a>     <strong>public</strong> String getProperty(String expression) {
<a name="141" href="#141">141</a>         <strong>if</strong> (expression == <strong>null</strong> || expression.length() == 0) {
<a name="142" href="#142">142</a>             <strong>return</strong> expression;
<a name="143" href="#143">143</a>         }
<a name="144" href="#144">144</a>         <strong>for</strong> (<strong>int</strong> i = 0; i &lt; expression.length(); i++) {
<a name="145" href="#145">145</a>             <strong>char</strong> c = expression.<strong>char</strong>At(i);
<a name="146" href="#146">146</a>             <strong>if</strong> (c == NESTED) {
<a name="147" href="#147">147</a>                 <strong>return</strong> expression.substring(0, i);
<a name="148" href="#148">148</a>             } <strong>else</strong> <strong>if</strong> (c == MAPPED_START || c == INDEXED_START) {
<a name="149" href="#149">149</a>                 <strong>return</strong> expression.substring(0, i);
<a name="150" href="#150">150</a>             }
<a name="151" href="#151">151</a>         }
<a name="152" href="#152">152</a>         <strong>return</strong> expression;
<a name="153" href="#153">153</a>     }
<a name="154" href="#154">154</a> 
<a name="155" href="#155">155</a>     <em>/**<em>*</em></em>
<a name="156" href="#156">156</a> <em>     * Indicates whether or not the expression</em>
<a name="157" href="#157">157</a> <em>     * contains nested property expressions or not.</em>
<a name="158" href="#158">158</a> <em>     *</em>
<a name="159" href="#159">159</a> <em>     * @param expression The property expression</em>
<a name="160" href="#160">160</a> <em>     * @return The next property expression</em>
<a name="161" href="#161">161</a> <em>     */</em>
<a name="162" href="#162">162</a>     <strong>public</strong> <strong>boolean</strong> hasNested(String expression) {
<a name="163" href="#163">163</a>         <strong>if</strong> (expression == <strong>null</strong> || expression.length() == 0) {
<a name="164" href="#164">164</a>             <strong>return</strong> false;
<a name="165" href="#165">165</a>         } <strong>else</strong> {
<a name="166" href="#166">166</a>             <strong>return</strong> (remove(expression) != <strong>null</strong>);
<a name="167" href="#167">167</a>         }
<a name="168" href="#168">168</a>     }
<a name="169" href="#169">169</a> 
<a name="170" href="#170">170</a>     <em>/**<em>*</em></em>
<a name="171" href="#171">171</a> <em>     * Indicate whether the expression is for an indexed property or not.</em>
<a name="172" href="#172">172</a> <em>     *</em>
<a name="173" href="#173">173</a> <em>     * @param expression The property expression</em>
<a name="174" href="#174">174</a> <em>     * @return &lt;code>true&lt;/code> if the expresion is indexed,</em>
<a name="175" href="#175">175</a> <em>     *  otherwise &lt;code>false&lt;/code></em>
<a name="176" href="#176">176</a> <em>     */</em>
<a name="177" href="#177">177</a>     <strong>public</strong> <strong>boolean</strong> isIndexed(String expression) {
<a name="178" href="#178">178</a>         <strong>if</strong> (expression == <strong>null</strong> || expression.length() == 0) {
<a name="179" href="#179">179</a>             <strong>return</strong> false;
<a name="180" href="#180">180</a>         }
<a name="181" href="#181">181</a>         <strong>for</strong> (<strong>int</strong> i = 0; i &lt; expression.length(); i++) {
<a name="182" href="#182">182</a>             <strong>char</strong> c = expression.<strong>char</strong>At(i);
<a name="183" href="#183">183</a>             <strong>if</strong> (c == NESTED || c == MAPPED_START) {
<a name="184" href="#184">184</a>                 <strong>return</strong> false;
<a name="185" href="#185">185</a>             } <strong>else</strong> <strong>if</strong> (c == INDEXED_START) {
<a name="186" href="#186">186</a>                 <strong>return</strong> <strong>true</strong>;
<a name="187" href="#187">187</a>             }
<a name="188" href="#188">188</a>         }
<a name="189" href="#189">189</a>         <strong>return</strong> false;
<a name="190" href="#190">190</a>     }
<a name="191" href="#191">191</a> 
<a name="192" href="#192">192</a>     <em>/**<em>*</em></em>
<a name="193" href="#193">193</a> <em>     * Indicate whether the expression is for a mapped property or not.</em>
<a name="194" href="#194">194</a> <em>     *</em>
<a name="195" href="#195">195</a> <em>     * @param expression The property expression</em>
<a name="196" href="#196">196</a> <em>     * @return &lt;code>true&lt;/code> if the expresion is mapped,</em>
<a name="197" href="#197">197</a> <em>     *  otherwise &lt;code>false&lt;/code></em>
<a name="198" href="#198">198</a> <em>     */</em>
<a name="199" href="#199">199</a>     <strong>public</strong> <strong>boolean</strong> isMapped(String expression) {
<a name="200" href="#200">200</a>         <strong>if</strong> (expression == <strong>null</strong> || expression.length() == 0) {
<a name="201" href="#201">201</a>             <strong>return</strong> false;
<a name="202" href="#202">202</a>         }
<a name="203" href="#203">203</a>         <strong>for</strong> (<strong>int</strong> i = 0; i &lt; expression.length(); i++) {
<a name="204" href="#204">204</a>             <strong>char</strong> c = expression.<strong>char</strong>At(i);
<a name="205" href="#205">205</a>             <strong>if</strong> (c == NESTED || c == INDEXED_START) {
<a name="206" href="#206">206</a>                 <strong>return</strong> false;
<a name="207" href="#207">207</a>             } <strong>else</strong> <strong>if</strong> (c == MAPPED_START) {
<a name="208" href="#208">208</a>                 <strong>return</strong> <strong>true</strong>;
<a name="209" href="#209">209</a>             }
<a name="210" href="#210">210</a>         }
<a name="211" href="#211">211</a>         <strong>return</strong> false;
<a name="212" href="#212">212</a>     }
<a name="213" href="#213">213</a> 
<a name="214" href="#214">214</a>     <em>/**<em>*</em></em>
<a name="215" href="#215">215</a> <em>     * Extract the next property expression from the</em>
<a name="216" href="#216">216</a> <em>     * current expression.</em>
<a name="217" href="#217">217</a> <em>     *</em>
<a name="218" href="#218">218</a> <em>     * @param expression The property expression</em>
<a name="219" href="#219">219</a> <em>     * @return The next property expression</em>
<a name="220" href="#220">220</a> <em>     */</em>
<a name="221" href="#221">221</a>     <strong>public</strong> String next(String expression) {
<a name="222" href="#222">222</a>         <strong>if</strong> (expression == <strong>null</strong> || expression.length() == 0) {
<a name="223" href="#223">223</a>             <strong>return</strong> <strong>null</strong>;
<a name="224" href="#224">224</a>         }
<a name="225" href="#225">225</a>         <strong>boolean</strong> indexed = false;
<a name="226" href="#226">226</a>         <strong>boolean</strong> mapped  = false;
<a name="227" href="#227">227</a>         <strong>for</strong> (<strong>int</strong> i = 0; i &lt; expression.length(); i++) {
<a name="228" href="#228">228</a>             <strong>char</strong> c = expression.<strong>char</strong>At(i);
<a name="229" href="#229">229</a>             <strong>if</strong> (indexed) {
<a name="230" href="#230">230</a>                 <strong>if</strong> (c == INDEXED_END) {
<a name="231" href="#231">231</a>                     <strong>return</strong> expression.substring(0, i + 1);
<a name="232" href="#232">232</a>                 }
<a name="233" href="#233">233</a>             } <strong>else</strong> <strong>if</strong> (mapped) {
<a name="234" href="#234">234</a>                 <strong>if</strong> (c == MAPPED_END) {
<a name="235" href="#235">235</a>                     <strong>return</strong> expression.substring(0, i + 1);
<a name="236" href="#236">236</a>                 }
<a name="237" href="#237">237</a>             } <strong>else</strong> {
<a name="238" href="#238">238</a>                 <strong>if</strong> (c == NESTED) {
<a name="239" href="#239">239</a>                     <strong>return</strong> expression.substring(0, i);
<a name="240" href="#240">240</a>                 } <strong>else</strong> <strong>if</strong> (c == MAPPED_START) {
<a name="241" href="#241">241</a>                     mapped = <strong>true</strong>;
<a name="242" href="#242">242</a>                 } <strong>else</strong> <strong>if</strong> (c == INDEXED_START) {
<a name="243" href="#243">243</a>                     indexed = <strong>true</strong>;
<a name="244" href="#244">244</a>                 }
<a name="245" href="#245">245</a>             }
<a name="246" href="#246">246</a>         }
<a name="247" href="#247">247</a>         <strong>return</strong> expression;
<a name="248" href="#248">248</a>     }
<a name="249" href="#249">249</a> 
<a name="250" href="#250">250</a>     <em>/**<em>*</em></em>
<a name="251" href="#251">251</a> <em>     * Remove the last property expresson from the</em>
<a name="252" href="#252">252</a> <em>     * current expression.</em>
<a name="253" href="#253">253</a> <em>     *</em>
<a name="254" href="#254">254</a> <em>     * @param expression The property expression</em>
<a name="255" href="#255">255</a> <em>     * @return The new expression value, with first property</em>
<a name="256" href="#256">256</a> <em>     * expression removed - null if there are no more expressions</em>
<a name="257" href="#257">257</a> <em>     */</em>
<a name="258" href="#258">258</a>     <strong>public</strong> String remove(String expression) {
<a name="259" href="#259">259</a>         <strong>if</strong> (expression == <strong>null</strong> || expression.length() == 0) {
<a name="260" href="#260">260</a>             <strong>return</strong> <strong>null</strong>;
<a name="261" href="#261">261</a>         }
<a name="262" href="#262">262</a>         String property = next(expression);
<a name="263" href="#263">263</a>         <strong>if</strong> (expression.length() == property.length()) {
<a name="264" href="#264">264</a>             <strong>return</strong> <strong>null</strong>;
<a name="265" href="#265">265</a>         }
<a name="266" href="#266">266</a>         <strong>int</strong> start = property.length();
<a name="267" href="#267">267</a>         <strong>if</strong> (expression.charAt(start) == NESTED) {
<a name="268" href="#268">268</a>             start++;
<a name="269" href="#269">269</a>         }
<a name="270" href="#270">270</a>         <strong>return</strong> expression.substring(start);
<a name="271" href="#271">271</a>     }
<a name="272" href="#272">272</a> }
</pre>
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